Reply to "Motor Mount Questions"

If you're considering an aftermarket intake manifold & a Holley, you do NOT want to raise the engine at all. Holley carb float-vents on most replacement intakes sit very close to the stock engine screen as it is. Levelness of the engine from your spacers- or not- is easily corrected with Holley float height settings.

The offset holes for the upper mounts will only fit one way. Reversing them shifts the engine backward by about 3/4". This is an advantage if you plan on installing a big-cap distributor. As-stock, there's not enough clearance between firewall and big caps which leads to contact and rotor breakage. But it does then force you to also redo the ZF mount(s) in back.

FWIW, I went the other way and sectioned our lower motormounts, removing 1" from the engine height so my Holley & hi-rise intake would fit under the screen.